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whats the best way to turn on my second pump

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Old 11-22-2012, 12:17 AM
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Default whats the best way to turn on my second pump

with my turbo system?

Im going to have a boost ref. regulator on my car but need to know how to activate it?

hobbs switch?

vacuum manifold etc......
Old 11-25-2012, 08:30 AM
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Hobbs switch

Old 11-25-2012, 01:10 PM
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i agree with the hobbs switch method, i
use this on my dual fuelpump setup and havent
had any problems..it turns on the second pump at 2psi boost.
Old 11-25-2012, 08:42 PM
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what brand hobb switch?

So your telling me that you use the stock pcm wire that feeds the stock power supply wire to the fuel pump and run it to TWO relays for both fuel pumps?
Old 11-26-2012, 07:32 AM
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Doesnt matter what hobbs switch you get, all function the same. Have it set low (1-3psi)

Its the trigger wire for the relays, no major current passes through it. Can run 10 relays off it without any issues

Forgot the legend for the relays
30 RED
87 GRY
87a Not Used
86 GRN
85 BLK
Old 11-26-2012, 08:14 AM
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thank you much. I will order one of the hobbs now.



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